WORMS. MOLLUSCA. 52. Echinus. 137 
Bafteri, 2. Shell depreffed, with fewer tubercles, and a ferrate line 
down the middle of the fpaces: pores of the avenues 
placed in alternate rows of 2 and 3 foramina. 
Lesk ap. Klein. tab. 43. fig. 3-5 tab. 49- f: Ng 
Bai. op. fubs. 3. p. 112. tab. 11. f. 2—8 
Reaum. 4&. Par. 1712. f. 177. & 8 
Gualt. Tefl. t. 107. f. A. 
Inhabits the Ez opéan Ocean, and is principally diftinguithed 
from Ech. eiculentus, in being lefs, in h ving the top more 
depreffzd, and the avenues of pores narro ver. 
Stel] greeniíh-grey, olive-green or reddith-violet: larger paces 
with 8 rows of ímall tubercles, befides fome very minute 
fcattered ones: leffer fpaces with z rows of larger and as ma- 
ny {mall tubercles: evenues with a triple row of double pores: 
[pines 3——4 lines long, ftriate, acute or obtufe, whitifh, violet, 
green or clackifh-olives 
Hemifphe- Hemifpherical, depreffed, with 1o avenues of pores, the 
ricuss fpaces with a ferrate future down the middle, and tranf- 
verfe lines: mouth pentangular, the angles obtufe. 
Klein. ed. losk. tab. 2, E. tab. 40, fig. 7 
Gualt. Teft. tab. 107, fig. M. 
Delic. Nat’ fel. 5. 88. tab. D, f 6. 
. Inhabits , probably a variety of Ech. ef fculentus. 
Shell yellowith-red with paler avenues, the bale ochraceous ; 
rough with larger and fmaller protuberances. 
Angulofute Hemifphazrical ; the fpaces granulate and bifarioufly wart- 
ed, the larger ones biparted by a ferrate future down 
the middle: avenues trifarioufly porous. 
Klein. Echin. ed lef. tab. 2, F, tab. 42, fg. t 
2. Lefs, and greenifh-grey. 
Klein Echin. ed. lesk. 5. 94. tab. 5, A, B. 
Seba Mu. 3. tab. 10, fg. 20. 
Argenv. coach, 1. p. 310, E 25, fie. H. 
Gualt. Tefl. tab, 108, fig. A 
. Delic, Nat. jel. 1. p. 88 2 TS fig. 4» 5. 
Inhabits ———. Shell grey with a "ues tinge. 
Spaces with rows of granulations and protuberances: avenues 
with double diftant. pores. | 
Excavatuss Hemifphaerical ; {paces granulate, all of them bifarioufly 
tuberculate: avenues excavated and bifarioufly porous. 
Klein Ech,-ed.. lesk. puQ5« tab. 445 faze 35 4s 
Scal, de corp. mar. petrif. tad, 22, fig, 2, D. 
Found at verona in a petrified ttate: grey-yellow. 
VOL. IV.—S ObLulas- 
